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<title>Issue 476 – Mention what -- becomes when fixing
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<p>Warn the user when Tidy changes -- to == in comments.</p>
<!-- This comment - this one, here - has some embedded hyphens that
     Tidy will not change to equals signs = -->
<!-- This comment == this one, here == has some embedded double hyphens that
     Tidy will change to double equals signs == -->
<!-- This comment === this one, here === has some embedded triple hyphens that
     Tidy will change to triple equals signs === -->
<!--= Cold Fusion uses this syntax for comments. =-->
<!---->
<!-- -->
<!--=-->
<!--= CF =-->
<!--= CF2 =-->
<!--== CF3 ==-->
<!--=== CF4 ===-->
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